Radiator-core.



I.M. FEDDERS.'

RADIATOR CORE. APPLICATION FILED MAY 6. 1915.

Patented. May 30, 1916.

3 .SHEETS-sluier 1.

ATTmRND/j.;

-I. II/I. FEDDERS.

RADIATOR CORE.

APPLICATION FILED MAY 6. I9I5.

Patented May30,1916.

3 SHEETS-SHEET 2.

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1. IVI. FEDDERS.

RADIATOR CORE. PPLlcAnoN man MAY s. 1915.

Patented May 30, 1916,

a3 SHEETS-SHEET 3.

llhllllll het@ FAN `Sl'OHN M. FEDDERS, 0F BUFFALO, NEW YORK, .ASSIGNOR T0 FEDDERS MANUFACTURING COMPANY, INC., OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK. I

BADIATOR-OORE.

Specification' of Letters Patent.

Vlt'atenticed May SO, ltllti.

Application filed May 6, 1915. Serial No. 26,25.

To all whom t may concern:

Be it known that l, JOHN M. Fnonnns, a citizen of the United States, residing at l3ntt'alo, in the county of Erie and State of New' The object of this invention is to produce a core for radiators of this character which has greater radiating efliciency, in which only the water passages are constructed of standard low brass, bronze or other closely knit and non-,corrosive metal while the air passages are constructed partly of common brass.

A radiator core of this character is shown in my pending application for Letters Patent #9900 series of 1915, and the present invention is an improvement on the construction shown in this earlier application.

ln the accompanying drawings: Figure l is a Yfragmentary front elevation ot `a radiator core embodying in v improvements. Fig. 2 is a` vertical transverse section taken in line 2-2, Fig. 3. Figs. o and l are vertical longitudinal sections taken in the correspondingly numbered lines in Fig. 2. Fig. 5 is a horizontal section taken `in line 5, Fig. 2. Fig. G is a 'fragmentary vertical section, on an enlarged scale, similar to Fig. 2. Fig. 7 is a fragmentary perspective View of one ot' the walls of a water tube. Fig. 8 is a similar view of one of the radiating webs. Fig. 9 is a `tragineutary vertical section similar to Fig. 6 but showing a slightly modified construction. i

`Similar characters of reference indicate corresponding parts throughout the. several Views.

ln its general organization this core is so constructed as to produc-e a plurality of upright water passages or tubes 1 which open at their upper and lower ends into the usual upper and .lower headers forming part of the radiator. and a` plurality of horizontal air passages or conduits 2 arranged between the water passages or tubes and extending tore and aft of the radiator.

Fach of the water tubes is of zig-Zag form so that the water in passing through the same takes a tortuous path and thereby increases the cooling area of the same which is exposed to the air on the exterior of the tube. ln its preferred form each of these tubes is constructed of two strips 3, 3 of sheet metal each of which is corrugated into Zig-Zag form and which are assembled so that the corrugations of these tubes it into each other but are spaced apart so as to leave a water passage therebetween. site longitudinal edges oi' the strips forming the walls of a tube the same are oit-set toward each other, as shown at 4 in Fig. 5, and the off-sets at corresponding longitudinal edges of the tube walls engage with each other and are connected by soldering or' other suitable means, thereby forming the closures at the longitudinal edges of the tube. The upper and lower transverse edges of the walls or strips of each tube are, however, disconnected from each other so as to permit the same to communicate with the -upper and lower headers of the radiator with which they are assembled in the usual and wellknown manner.

At the turns of the walls ot the several water tubes the same are provided with lattened bearing faces 5, G which faces of each wall form alternately lthe convex and concave sides of the turns in the respective wall. In the assembled position of the two walls ot a. water tube each convex flat face 5 ot one wall is arranged in line with a concave {iat face 6 of the companion wall of the tube, as shown in Fig. 2.

Between the several water tubes are arranged a plurality of radiating webs or fins 7 which engage with these tubes andv serve to carry oil' some of the heat ot' the water passing through the tubes and deliver it to the air Which passes lengthwise through the radiator in contact` with these radiating webs. Each of these radiating webs is pret- ;erably constructed of a strip of sheet metal which is corrugated into zig-zag or tortuous form and each turn in this strip is preferably constructed to provide aiia-t bearing face 8. As shown in Figs. l and 2, two of such radiating webs are arranged between two adjacent watertubes in suchmanner that these webs engage with each other and also engage respectively with the opposing 4walls of the water tubes with which they cooperate. lf desired, however, the number of such radiating webs may be varied to suit the capacity of the radiator At the oppol'ti -which is to be .made or to suit other condi-v ltions. ln the organizivxtion shown in Fig. 2, the flat faces at the turns` of each radiating web engage alternately with the convex liat 'i faces of a wallof one water tube and the..`

convex" sides of the iiattencd faces on the companion radiating web, `so that as a whole the radiator core presents acellular appear,-

ance when viewed eitherv from the front or from the rear side thereof. l vAt its upper and lower transverse edges each ofthe radiating webs is secured to the corresponding edges of the companion tube wall with which the same is associated, pref? erably by means of a lock joint t), asshoivn 1n Fig. 2, and v1s alsoconnected with the corresponding ends ofthe companion radiating web` or strip, preferably by a solder joint 10, thereby closing` the spaces of the core venting between the ends of adjacent tubes and pre'- thewater from lealiing out` of the headers.

The several water Atubes and radiating rwebs or fins are also preferably` in'terlocked with each other so as to stili'en the radiator core and prevent displacemei.t of its mem'-,

'-bers relatively to each other and still 'retain 'sufficient .liexibility of thesame-to-per-- mit the core to adapt itself to the slight lchanges in the position of the parts on which the radiator is'inounted. lFor this vpurpose each of the convex faces ofthe walls of each radiator tubeis provided with an outwardlv extending projection 11 which preferably 35 has the form of a longitudinal bead or rib and the adjacent iattened turn of the coin- `panion radi-ating web -is p'rovlded with a seating aperture 12 which preferably has the forni of a longitudinalslot and lreceives the conipanion bead or rib, thereby inter-4 locking these parts.

The metal displaced from the Vwebs for forminggthe slots 12 is preferably turned outwardly to forml hori.

zontal flanges 121 above and below each slot,

' as shown in Figs. 2, 5, 6 and 8 for increasing the radiating eliiciencyof ,the core, 'or this metal may be entirely removed, as shown in Fig. 9. By thus providing theflat faces 6 of the webs with slots which receive the beads 11 of the water tube Walls the pres-- enceofa double thickness of metal between.

v the opposing surfacesofl the water tube` walls and the radiating webs is reduced tov a'minirnum inasmuch as the beads l1 are exposed to the atmosphere and thereby increasing the` radiating'or cooling capacity of the core accordingly.Y tei-mediate turns of the radiating Webs which 'alternatel with'.tl1ose engaging the' water tube are also provided with complemen'tary'interlocking projections 13 and recesses 14, the the form of longitudinal beads orribs which j are formed on one of the webs. and the comlpanio'n recesses 'of the other radlatlng web The flattened inprojections having preferably.

having the form of corresponding grooves orchannels so.as to receive'the beads'of the other web and produce airinterlocking connection between the saine. `The upright edgesof the webs may also be offset, as

shown at 15 for the purpose of fitting the offset portions of the water tube walls yor,

strips. n

Inorder to still further increase theradiating efficiency of the core each-of the in-j` clined sections 71 of the webs 7 which alteri y nate with the bearing faces 8y thereof is provided with one or more lips or wings 8A1 j whichare stamped out ofthe metal of the sections 71 and bent laterally'therefrom so as to project into the a longitudinal row on each web section 71 .andthe several lips in each/row are arf j the several lips in each row ranged in different stands in a different 'whereby n gaged by' the current of air independently of the other' lips and thus aids'in transferplanes so that each lip part of the air passage,

` path of the air passing through the radiatorcore. A plurality ofsuch lips or wings are preferably formed in the front edge of eachk lip is enring the heat of the water in the tubes to the atmosphere.

The ends of. the radiating webs adjacent tothe corresponding ends of the water tubesk are preferably covered with solder or other material, so that any pores in these partsv of thewebs will be closed and leakage of water through the same is prevented.-

'j I 'claim as my invention:

1. A radiator corecomprising a plurality lengthwise inline.

2. Aradiator core comprising a plurality of Water tubes each of which is of zig-zag formand provided at its turns with Contact being arranged Y faces, and a pluralitycf radiating webs arl ranged between adjacent tubes, eachlweb` being of. zig-zag form' and having vcntact faces at its turns which engage with the corresponding facesv of lan adjacent tube,

the faces lof said tubesvbeing provided-with` 4projections and the faces of the webs having slots which receive saidl projections.

of water tubeseach of which is form and provided at its turns 3. Aradiator core comprising a plurality of zig-'zag with con-" ,tact faces and a plurality of radiating iwebs.

arranged between-adjacent tubes, each web y being' of zigzag form-l andhaving contact faces at its turns which engage with the ,cor-y i responding faces of an adjacent tube, the cof" operating faces of each tube, and the adjaf' cent webbeing flat and provided with complementary projectlons and` slots which in-x terlock with eaclx omer, and each web being provided adjacent to its Slots with laterally projecting flanges.

4. A radiator core comprising a plurality of* water tubes each of which is of zig-zag forml and Aprovided at its turns With contact faces and a plurality of radiating Webs arranged betweenadjacent tubes, each web being of zig-zag' form and having contact 

